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CVE Explorer

CVE-2026-4658

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the className, classHook, and blockId attributes in the Add to Cart block (essential-blocks/add-to-cart) in all versions up to, and including, 6.0.4. This is due to insufficient output escaping in the render_callback() function where these attributes are placed into class and data-id HTML attributes using raw sprintf() and implode() without esc_attr() e
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8e5e133ea33c8cd986ac2783885c31a11ca199dadf368a80d924aa54a2da1e97
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns","vendor":"wpdevteam","versions":[{"lessThanOrEqual":"6.0.4","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/problemTypes/0/descriptions/0

Source references

10 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.0.4/includes/Blocks/AddToCart.php#L118"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.0.4/includes/Blocks/AddToCart.php#L120"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.0.4/includes/Blocks/AddToCart.php#L65"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/6
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.0.4/includes/Blocks/AddToCart.php#L66"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/8
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/Blocks/AddToCart.php#L118"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/Blocks/AddToCart.php#L120"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/Blocks/AddToCart.php#L65"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/essential-blocks/trunk/includes/Blocks/AddToCart.php#L66"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/7
{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3516287%40essential-blocks%2Ftags%2F6.1.0%2Fincludes%2FBlocks%2FAddToCart.php&old=3178777%40essential-blocks%2Ftrunk%2Fincludes%2FBlocks%2FAddToCart.php"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/9
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/3e7eed9d-2d44-4951-b66b-7d8995ca617d?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ae5cc0064f0a57aa28e5d0f2ff9b8c30657288d48479401b27df032612d75528 · sha256:0e7ed960f8229085… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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